Wire-drawing machine.



A. RfisBATcH. WIRE DRAWING MAGHINE.

1 APPLICATION FILED JAN. 11, 1904.

900,312; Patented Oct. 6,1908.

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WIRE DRAWING MAGHINE. APPLICATION rrLnnin. 11, 1904.

"900,312 Patented Oct. 6,1908.

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WIRE DRAWING MAG E.

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900,312, Patented Oct. 6,1908.

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WIRE-DRAWING Macrame.

Specification of Letters Patent;

Patented'Oct. c, 1908.

Application med January 11, 1904. Serial No. 188,466.

To all whom it may concern:

Be it known that I, ALFRED Russ-Aron, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvelne nt in Wire-Drawing Machines, of which the following is a s ecification, the principle ,of the invention h eing herein explained and. the..l)'est mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to mechanism for drawing wireand particularlyto that class of such mechanism. inwhich the wire is drawn successively through aplurality of'dies, and generally known .as continuous wire-draw ing machines. The object of said inven' tion is to effect the drawing of wire in an economical and efficient manner.

The invention consists of means hereinafter fully described and particularly pointed out inthe claims;

The annexed drawings and the following' description set forth in detail certain mechanism embodyi'ng' the invention, such disclosed means constituting but one of various mechanical forms in which the principle 'of the invention may be used. I Insaid annexed drawings: Figurelrepresent s a side elevation of a machine embodying my invention, showing the frame and dies in vertical longitudinal section. Fig.2 represents aplan of such machine as viewed from above, the upper movable compensating guide pulleys shown in Fig. 1 bcingpmitted. Fig. 3 represents an end elevation'of same. Figs. 4 and 5 represent, on an enlargedfscale, axial and transverse'sections respectively of one ofthe drawing blocks embodied insaid machine.

Upon the lower. part of a suitable frame A, are mounted a plurality of parallel driving spindles B and upon one end of each is,

mounted a beveledgear bjsuch gears varying in size from a gnaig mjum at the front end (right hand as-v ewed in Fig. 2) to a m 1n1 mum at the'op'piisite or rear end. Alongitudinal main driving-shaft C is provided with a plurality of beveled-gears c res )cctivcly en:

gaging the gears b ns'shown in lg. 2. Each s'iindle B forms the lower spindle of a s'ieed changing device D whose upper spindle is mounted on the upper part of said frame A,

as shown in Fig. 3. The constructionyif each, of these speed changing devices may be that ment will hereinafter appear.

by. means of which the diameters 'of'upper t and lower pulleys d andd mounted upon spindles B and-B, are respectively increased and diminislmd I ultaneoi'islyso as to vary "l the speed of the upper spindles B, 'as required. Upon one end. of each spindle B is mounted a cylindrical wire drawing block E.

tach such block is formed with two slots e." parallel with its axis andintersecting its spindle bore, as shown in Figs. 4 and 5;

The surface of one side of 'each slot is sub stantially radial with res eet to the block and the other side curved as s own. Two springactuated pawls-c e normally engage these I slots respectively, and are provided with straight and curved sides as shown, the arrangement being such that the driving spindle engages and fixes the block relatively to itself, when rotated in the direction required to draw the wire from front to rear of the machine, but may' be caused to disengage same when rotated in the opposite direction. Such construction allowsjthe block to be rotated in the normal direction of rotation at a speed greater than and prohibits its rotation at alcss rate of speed in such direction than that of its spindle, and also allows the blocks to be rotated in said direction when the spindies are idle. .The utility of such arrange- In front of each block is mounted a diejF,

the diameter of the die openings varylng from the maximum at the front to a minimum at the rear of the machine, as is usual in this class of devices. Intermediately of. each block and the sueeeeding'die is located a guiding pulley G which guides the wire into such succeeding die and is mounted upon the 7 frame of the machine.

Above the frame and hung from a suitable support Ii -is a series of pulleys H H, etc.', corresponding in number with the numbenof spaces intermediate of the blocks and dies and having'their axes located in. a vertical plane passing through such spacefs. Each such pulley 'issupported by a rope or chain I! which. runs over a pulley/1 hxcd to sand sup llU port.- This rope passes laterally over. a pulley 71 fixed to a sup ort H and to its freeend is secured a suitab e weight if.

The rearmost block E is of longitudinally enlarged form such as is usually provided for winding or reelin u the wire.

' In preparing f r t e operation of the above described mechanism, the wire is passed through the first die, then given several turns around the first block. It is then passed upwardly and over the first ulley H, then downwardly around first pul ey and through the second die, In so passing the wire, the

' latter is fore-shortened sufliciently to pull the pulley downwardly some distance so as to yield and cause the weight h to tend to move same away from the block and to exert a pull upon the loo 7c of the wire, and the pulley to constant y tend to retract and maintain a substantially constant tension in the wire of such loop. A similar process of stringingv the wire is followed with respect to the succeeding blocks, pulleys and dies; Each pulley H hence forms a yielding re- "tractible means for guiding and supporting the wire. intermediate of its respective block and guiding pulley G. The blocks are rotated at speeds varying from a minimum at the front to the maximum at the rear of the machine as previously described, so as to drawthc wire without buckling. After the machine has been properly adjusted to effect the drawing as required, the operation continues as described until one of the dies wears to a larger diameter. When a certain de ree of enlargement is efi ected in any one die, the loop succeedingsuch die becomes elongated above the normal. This is brought about by reason of the fact that more than the normal amount of stock is fed to the succeeding die die is should have been performed by the enlarged performed by the said succeeding die. This elongation is, however, taken up by the action of the weight upon the corresponding ulley, so that the required tension upon the cop is maintained and the defect of the die is indicated by'the upward movement of the pulley. In order then to prevent a continuation of such'elongation from effecting the buckling of the wire, it is only necessary to speedup the blockssucceeding the defective die, in progressively varying degrees, by means of the change-speed mechanism.

Such described effect u )on the operation of thedie succeeding the efective die isalso accompanied by a foreshortening of the loop of wire preceding such defective die for the reason that since more stock is passed through said die, a greater length is drawn In the event through same in a given 'time. that no means were provided to compensate for such increase of speed, the wire preceding such die would be stretched and unevenly elongated, such action having been found to impart an oval or elliptical cross-section to such wire. Such action is, however, prevented by the yielding of the corresponding pulley ll, until the mechanism is again readjusted to correct the variation.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed provided the means stated bythe following claim orthe equivalent of such stated means be employed.

I therefore particularly point out and distinclly claim as my inventionin a wire drawing machine, the combination of a die, a drawing drum therefor, a second die adapted to operate upon the wire after it has passed through the first mentioned die, a second drawing drum therefor, common operative means for both said drums, said means including a ratchet device adapted tmdrive the first mentioned drum at its minimum rate of s peed, but so construct ed as to permit of free forward rotary movement of said drum at a greater speed.

Signed by me, this 6 day of January, 1904.

ALFRED RUSBAlCI-I. Attested by: i

A. E. MERKEL, G. W. SAYWELL. 

